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A comment on America’s Air Quality Worsens, Ending Years of Gains, Study Says. Parent comment

Re:America’s Air Quality Worsens, Ending Years of Gains, Stu... by inferiorhuman on Thursday December 05, 2019 @11:32PM (#21719289)
...at the expense of piston rings and other expensive, hard-to-get-to items.

Uh, no.

And, an educated guess here, probably increased emissions on the overrun.

Also, no. Most cars built in the last 30+ years will stop injecting fuel during overrun.

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